Lock



FIG. 1 is a front perspective view of a lock showing my new design;

FIG. 2 is a left side elevational view of the lock of FIG. 1;

FIG. 3 is a right side elevational view of the lock of FIG. 1;

FIG. 4 is a front elevational view of the lock of FIG. 1;

FIG. 5 is a rear elevational view of the lock of FIG. 1;

FIG. 6 is a top plan view of the lock of FIG. 1; and,

FIG. 7 is a bottom plan view of the lock of FIG. 1.

The portions of the Figures shown in broken lines are for illustrative purpose only and form no part of the claimed design. 

CLAIM I claim the ornamental design for a lock, as shown and described. 